Super Moderator

The rear bar requires unbolting and lowering the rear cradle ~ 4". Its bolted to the top of the cradle. You'll need a long breaker bar to loosen the 4 large cradle to body bolts. The driveshaft remains connected to the differential.

The car can be supported with jackstands and the cradle can be lowered with a floor jack (wood block under diff housing).

You'll need to unbolt the rear brake line brackets to allow enough slack for lowering the rear cradle and unbolt the top shock mounts.

The rear exhaust resonators have a bolt that holds the bracket to allow lowering the exhaust (can be left connected to car, they lower with the cradle's hangers).
Not sure how the left side pipe is handled on the V6, you'd need to support the left side rear resonator to avoid kinking the pipe union on a V8.

When putting the cradle back in, make sure the springs are seated in their cups when raising the cradle back up. Tighten the bolts with the full weight of the car back on the ground.

Its not that difficult, just takes time to unbolt and the little items and retrace carefully to make sure everything is re-installed correctly.

Registered

I'll admit I don't understand the sizes of sway bars on these cars.. the regular R/T and SRT have a 16mm rear sway, whereas my STP equipped R/T comes with a 20mm rear sway bar. with the springs on the SRT and STP being close to the same ride height and I can't say but I was told the spring rates are similar why the bar is larger on the STP R/T's........... is there an easy answer Hal?

I don't know why only the SRT remains with the smaller rear bar, unless they're trying to preserve a softer ride characteristic. With the advent of the '12 SRT having the active suspension (shocks front & rear), that is how they accomplish a user selected ride/handling quality.

The STP cars are a bit firmer ride with the 20mm rear bar, but the increase in stiffness it give a much better feel in curves and corners.

Registered

I'll take a wild guess on sway bar size. Increasing the rear bar size increases oversteer and maybe the engineers felt that with the abundance of power with the SRT and the ability to oversteer with the throttle, that a little bit smaller rear bar provided better balance and was safer at speed and on the track.

Registered

As promised here's my findings... My car handles MUCH better with the matching rear Eibach sway bar. Turn in is sharper, less understeer mid corner and the car stays noticeably flatter throughout the corner. I'm kinda surprised as I didn't think I'd notice that big of difference, but I did.

Is adding a larger rear sway bar worth it?

In my case, definitely, as I had already installed the larger front. In retrospect, I should have done both at the same time!

I'll need tires soon. I'm running the factory provided 275/40 x 20 tires on all four corners. They are mounted on the factory 9.5" rims. Pic below. I'd like to start running 305/35 x 20 or 315/35 x 20 on the rear, but not if I have to buy 4 new rims. My preference would be to buy new rims...

Hi
I'm planning to buy a widebody demon style kit for my 2016 Challenger RT Plus.. my question is what is the right size of spacers that I need to install? (high quality and safe)
Is there any other safer way instead of installing spacers?
Thx

So, this mod has been on my radar as it's mostly a DIY project, and I have experience in rattle can painting. What I'm wondering is:
If you did this, did you finish up with clear coat?
Did you "cure" the paint by baking in the oven?
If I do this, it would be clean the calipers (and mounting...

My buddy is getting lowering springs on his ‘16 scat pack and I was wondering if I would be able to use his original OEM scat pack springs on my ‘15 RT plus to get more of an aggressive look? From what I have researched they should fit but I’m not sure if I’ll run into any issues. Has anyone...